Boston Marathon logo
BOSTON MARATHON 2023

Cal Calamia

Bib: 5986•X

CA

0:00
0:00
/ mi
Be the first to cheer!
Overall
#0 / 26622
Top 7%
Gender (Other)
#0 / 23
Top 9%
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
20:33
Rank: #2997
Start → 5K
20:33 | 6:37/mi
10K· 6.21 mi
40:32
Rank: #2655 (+342)
5K → 10K
19:59 | 6:26/mi
15K· 9.32 mi
59:49
Rank: #2094 (+561)
10K → 15K
19:17 | 6:12/mi
20K· 12.43 mi
1:19:17
Rank: #1847 (+247)
15K → 20K
19:28 | 6:16/mi
Half· 13.11 mi
1:23:30
Rank: #1820 (+27)
20K → Half
4:13 | 6:11/mi
25K· 15.53 mi
1:38:39
Rank: #1708 (+112)
Half → 25K
15:09 | 6:15/mi
30K· 18.64 mi
1:58:50
Rank: #1648 (+60)
25K → 30K
20:11 | 6:30/mi
20M
2:07:46
Rank: #1639 (+9)
30K → 20M
8:56 | 6:34/mi
21M
2:14:34
Rank: #1598 (+41)
20M → 21M
6:48 | 6:48/mi
35K· 21.75 mi
2:19:39
Rank: #1645 (-47)
21M → 35K
5:05 | 6:48/mi
23M
2:28:30
Rank: #1748 (-103)
35K → 23M
8:51 | 7:04/mi
24M
2:35:15
Rank: #1786 (-38)
23M → 24M
6:45 | 6:45/mi
40K· 24.85 mi
2:41:30
Rank: #1880 (-94)
24M → 40K
6:15 | 7:18/mi
25.2M
2:44:01
Rank: #1890 (-10)
40K → 25.2M
2:31 | 7:18/mi
Finish· 26.22 mi
2:51:00
Rank: #1938 (-48)
25.2M → Finish
6:59 | 6:51/mi

The Course

Is this your race?

Claim it — unlock a deeper AI report on this race, free

A personalized Race Performance Report that goes beyond this page — emailed to you, built from your real splits.

Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:23:30
Pace6:22 /mi
2nd Half
Distance13.11 mi
Time1:27:30
Pace6:40 /mi
📊Positive Split: 4.8% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:23:0720:336:3720:33
6:37
-
10K
6.21 mi10:43:0640:326:3119:59
6:26
-0:11
15K
9.32 mi11:02:2359:496:2519:17
6:12
-0:14
20K
12.43 mi11:21:511:19:176:2319:28
6:16
+0:04
Half
13.11 mi11:26:041:23:306:224:13
6:11
-0:05
25K
15.53 mi11:41:131:38:396:2115:09
6:15
+0:04
30K
18.64 mi12:01:241:58:506:2220:11
6:30
+0:15
20M
20.00 mi12:10:202:07:466:238:56
6:34
+0:04
21M
21.00 mi12:17:082:14:346:246:48
6:48
+0:14
35K
21.75 mi12:22:132:19:396:255:05
6:48
0:00
23M
23.00 mi12:31:042:28:306:278:51
7:04
+0:16
24M
24.00 mi12:37:492:35:156:286:45
6:45
-0:19
40K
24.85 mi12:44:042:41:306:306:15
7:18
+0:33
25.2M
25.20 mi12:46:352:44:016:312:31
7:18
0:00
Finish
26.22 mi12:53:342:51:006:326:59
6:51
-0:27

Checkpoints & Pacing

📈Pace Line

Pace Progression

Track your pace changes throughout the race. Dot colors mark your quickest to easiest segments, relative to your own pace.

Fastest Pace

6:11 /mi

Average Pace

6:32 /mi

Slowest Pace

7:18 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:26:24

86% of race

Time at Steady Pace

15:50

9% of race

Time at Slower Pace

8:46

5% of race

Average Pace: 6:31 /mi

Loading chart...
Faster pace (< avg)
Steady pace (≈ avg)
Slower pace (> avg)

🎨Heatmap

Pace Heatmap

Where you sped up and eased off relative to your own pace across the race. Colors are relative to your own range, not to other runners.

Loading...
0mi6.6mi13.1mi19.7mi26.2mi
Pace:
Faster
Steady
Slower

Click or hover over segments to see details

✨Sparklines

Checkpoint Splits with Pace Trends

Overall Pace Trend

CheckpointDistanceTime of DayTimeAvg PaceSegmentPaceTrendRank
5K
3.11 mi10:23:0720:336:3720:33
6:37
#2997
10K
6.21 mi10:43:0640:326:3119:59
6:26
#2655
15K
9.32 mi11:02:2359:496:2519:17
6:12
#2094
20K
12.43 mi11:21:511:19:176:2319:28
6:16
#1847
Half
13.11 mi11:26:041:23:306:224:13
6:11
#1820
25K
15.53 mi11:41:131:38:396:2115:09
6:15
#1708
30K
18.64 mi12:01:241:58:506:2220:11
6:30
#1648
20M
20.00 mi12:10:202:07:466:238:56
6:34
#1639
21M
21.00 mi12:17:082:14:346:246:48
6:48
#1598
35K
21.75 mi12:22:132:19:396:255:05
6:48
#1645
23M
23.00 mi12:31:042:28:306:278:51
7:04
#1748
24M
24.00 mi12:37:492:35:156:286:45
6:45
#1786
40K
24.85 mi12:44:042:41:306:306:15
7:18
#1880
25.2M
25.20 mi12:46:352:44:016:312:31
7:18
#1890
Finish
26.22 mi12:53:342:51:006:326:59
6:51
#1938
Faster pace
Steady pace
Slower pace
Est.Checkpoint not recorded (estimated)
~Segment time uses estimated prior

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallXAge DivSeg. OverallSeg. XSeg. Age Div
5K3.11 mi3.11 mi2997441273(Top 5%)2(Top 9%)2
10K6.21 mi3.10 mi2655+3423+13+12417(Top 9%)3(Top 13%)3
15K9.32 mi3.11 mi2094+561331273(Top 5%)2(Top 9%)2
20K12.43 mi3.11 mi1847+2472+12+11277(Top 5%)2(Top 9%)2
Half13.11 mi0.68 mi1820+27221336(Top 5%)2(Top 9%)2
25K15.53 mi2.42 mi1708+112221149(Top 4%)2(Top 9%)2
30K18.64 mi3.11 mi1648+60221548(Top 6%)2(Top 9%)2
20M20.00 mi1.36 mi1639+9221767(Top 7%)2(Top 9%)2
21M21.00 mi1.00 mi1598+41221379(Top 5%)2(Top 9%)2
35K21.75 mi0.75 mi1645-47224227(Top 16%)4(Top 17%)4
23M23.00 mi1.25 mi1748-103224171(Top 16%)3(Top 13%)3
24M24.00 mi1.00 mi1786-38223422(Top 13%)3(Top 13%)3
40K24.85 mi0.85 mi1880-94225457(Top 20%)4(Top 17%)4
25.2M25.20 mi0.35 mi1890-10223056(Top 11%)3(Top 13%)3
Finish26.22 mi1.02 mi1938-48224407(Top 17%)3(Top 13%)3

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 5%
×21stories
+97ft-345ft

Overall

1273

X

2

Age Div

2

5K→10K

3.1 - 6.2 mi

Top 9%
×5stories
+79ft-138ft

Overall

2417

X

3

Age Div

3

10K→15K

6.2 - 9.3 mi

Top 5%
×3stories
+67ft-78ft

Overall

1273

X

2

Age Div

2

15K→20K

9.3 - 12.4 mi

Top 5%
×5stories
+106ft-86ft

Overall

1277

X

2

Age Div

2

20K→Half

12.4 - 13.1 mi

Top 5%
×2stories
+19ft-37ft

Overall

1336

X

2

Age Div

2

Half→25K

13.1 - 15.5 mi

Top 4%
×4stories
+66ft-88ft

Overall

1149

X

2

Age Div

2

25K→30K

15.5 - 18.6 mi

Top 6%
×9stories
+181ft-148ft

Overall

1548

X

2

Age Div

2

30K→20M

18.6 - 20.0 mi

Top 7%
×5stories
+64ft-50ft

Overall

1767

X

2

Age Div

2

20M→21M

20.0 - 21.0 mi

Top 5%
×8stories
+106ft-24ft

Overall

1379

X

2

Age Div

2

21M→35K

21.0 - 21.8 mi

Top 16%
×7stories
+17ft-86ft

Overall

4227

X

4

Age Div

4

35K→23M

21.8 - 23.0 mi

Top 16%
×5stories
+23ft-63ft

Overall

4171

X

3

Age Div

3

23M→24M

23.0 - 24.0 mi

Top 13%
×6stories
+12ft-82ft

Overall

3422

X

3

Age Div

3

24M→40K

24.0 - 24.9 mi

Top 20%
×1story
+6ft-20ft

Overall

5457

X

4

Age Div

4

40K→25.2M

24.9 - 25.2 mi

Top 11%
×1story
+13ft-16ft

Overall

3056

X

3

Age Div

3

25.2M→Finish

25.2 - 26.2 mi

Top 17%
×2stories
+22ft-21ft

Overall

4407

X

3

Age Div

3

Passing Analysis

Category:
Athletes Passed
1550
Passed By
491
Net Change
+1059
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#2997
5K → 10K38442+342#2997#2655
10K → 15K5610+561#2655#2094
15K → 20K2503+247#2094#1847
20K → Half281+27#1847#1820
Half → 25K1142+112#1820#1708
25K → 30K8727+60#1708#1648
30K → 20M2314+9#1648#1639
20M → 21M476+41#1639#1598
21M → 35K451-47#1598#1645
35K → 23M8111-103#1645#1748
23M → 24M1452-38#1748#1786
24M → 40K6100-94#1786#1880
40K → 25.2M919-10#1880#1890
25.2M → Finish1563-48#1890#1938
TOTALS1550491+1059
📊

Passing Visuals

Category:

📈Position Graph

Loading...

🎨Heatmap Timeline

Loading...

🔄Passing Circle

Loading...

🌊Position Flow

Loading...

🏃Race Lanes

Loading...

Upload your GPX file

Supports Garmin, Apple Watch, Polar, Suunto, COROS, Strava, and other apps

.gpx files up to 10MB

Export Track Data

Download your race performance as a GPX or TCX file to import into Strava, Garmin Connect, or other fitness apps.

Questions or issues regarding timing data?

If you notice any discrepancies in your timing data or have questions about your results, our support team can help.

Contact Race Support
Share Feedback

Public Race Data

Boston Athletic Association

Boston Athletic Association

Mika Timing

Mika Timing